breaking change : re-implement custom mappings | simplify it | add whichkey

fixes #1057 , #1047

init.lua

@@ -4,15 +4,16 @@ if present then
    impatient.enable_profile()
 end
 
-local core_modules = {
-   "core.utils",
-   "core.options",
-   "core.autocmds",
-   "core.mappings",
+local modules = {
+   "utils",
+   "options",
+   "autocmds",
+   "commands",
 }
 
-for _, module in ipairs(core_modules) do
-   local ok, err = pcall(require, module)
+for _, module in ipairs(modules) do
+   local ok, err = pcall(require, "core." .. module)
+
    if not ok then
       error("Error loading " .. module .. "\n\n" .. err)
    end